Why does crappie fishing fall apart during fall turnover?

Turnover demolishes the structure the fish were organized around. When the surface cools to match the deep water — near 10–13 °C (50–55 °F) — the whole column mixes: the thermocline vanishes, oxygen and temperature become uniform top to bottom, and suddenly bait and crappie can be anywhere. Schools that were compressed into a tidy band scatter, and the water itself turns murky with stirred sediment. The slump usually lasts one to two weeks; skip lakes that smell sulfurous and look tea-stained, or find water that has already restabilized — shallow lakes finish turning over first.

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